Clean up Makefile "warning" clutter when makeopts doesn't exist.

Review: https://reviewboard.asterisk.org/r/2304


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@384989 65c4cc65-6c06-0410-ace0-fbb531ad65f3

Makefile

@@ -81,6 +81,8 @@ export STATIC_BUILD       # Additional cflags, set to -static
                           # should go directly to ASTLDFLAGS
 
 #--- paths to various commands
+# The makeopts include below tries to set these if they're found during
+# configure.
 export CC
 export CXX
 export AR
@@ -221,10 +223,13 @@ ifeq ($(OSARCH),SunOS)
   _ASTCFLAGS+=-Wcast-align -DSOLARIS -I../include/solaris-compat -I/opt/ssl/include -I/usr/local/ssl/include -D_XPG4_2 -D__EXTENSIONS__
 endif
 
-ASTERISKVERSION:=$(shell GREP=$(GREP) AWK=$(AWK) GIT=$(GIT) build_tools/make_version .)
-
-ifneq ($(wildcard .version),)
-  ASTERISKVERSIONNUM:=$(shell $(AWK) -F. '{printf "%01d%02d%02d", $$1, $$2, $$3}' .version)
+ifneq ($(GREP),)
+  ASTERISKVERSION:=$(shell GREP=$(GREP) AWK=$(AWK) GIT=$(GIT) build_tools/make_version .)
+endif
+ifneq ($(AWK),)
+  ifneq ($(wildcard .version),)
+    ASTERISKVERSIONNUM:=$(shell $(AWK) -F. '{printf "%01d%02d%02d", $$1, $$2, $$3}' .version)
+  endif
 endif
 
 ifneq ($(wildcard .svn),)
@@ -450,7 +455,11 @@ datafiles: _all doc/core-en_US.xml
 	done
 	$(MAKE) -C sounds install
 
-doc/core-en_US.xml: makeopts cleantest $(foreach dir,$(MOD_SUBDIRS),$(shell $(GREP) -l "language=\"en_US\"" $(dir)/*.c $(dir)/*.cc 2>/dev/null))
+ifneq ($(GREP),)
+  XML_core_en_US = $(foreach dir,$(MOD_SUBDIRS),$(shell $(GREP) -l "language=\"en_US\"" $(dir)/*.c $(dir)/*.cc 2>/dev/null))
+endif
+
+doc/core-en_US.xml: makeopts cleantest $(XML_core_en_US)
 	@printf "Building Documentation For: "
 	@echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" > $@
 	@echo "<!DOCTYPE docs SYSTEM \"appdocsxml.dtd\">" >> $@
@@ -464,7 +473,11 @@ doc/core-en_US.xml: makeopts cleantest $(foreach dir,$(MOD_SUBDIRS),$(shell $(GR
 	@echo
 	@echo "</docs>" >> $@
 
-doc/full-en_US.xml: makeopts cleantest $(foreach dir,$(MOD_SUBDIRS),$(shell $(GREP) -l "language=\"en_US\"" $(dir)/*.c $(dir)/*.cc 2>/dev/null))
+ifneq ($(GREP),)
+  XMX_full_en_US = $(foreach dir,$(MOD_SUBDIRS),$(shell $(GREP) -l "language=\"en_US\"" $(dir)/*.c $(dir)/*.cc 2>/dev/null))
+endif
+
+doc/full-en_US.xml: makeopts cleantest $(XML_full_en_US)
 ifeq ($(PYTHON),:)
 	@echo "--------------------------------------------------------------------------"
 	@echo "---        Please install python to build full documentation           ---"

build_tools/make_buildopts_h

@@ -1,5 +1,8 @@
 #!/bin/sh
 
+GREP=${GREP:-grep}
+MD5=${MD5:-md5sum}
+
 cat << END
 /*
  * buildopts.h 

build_tools/make_linker_version_script

@@ -1,5 +1,6 @@
 #!/bin/sh
 
+AWK=${AWK:-awk}
+
 test -f ${1}.exports.in && ${AWK} "{sub(\"LINKER_SYMBOL_PREFIX\", \"${2}\"); print;}" ${1}.exports.in > ${1}.exports && exit 0
 test -f ${1}.exports.in || rm -f ${1}.exports && cp ${3}/default.exports ${1}.exports && exit 0
-

build_tools/make_version

@@ -1,5 +1,9 @@
 #!/bin/sh
 
+AWK=${AWK:-awk}
+GIT=${GIT:-git}
+GREP=${GREP:-grep}
+
 if [ -f ${1}/.version ]; then
     cat ${1}/.version
 elif [ -d ${1}/.svn ]; then
@@ -92,7 +96,7 @@ elif [ -d ${1}/.git ]; then
     # If the first log commit messages indicates that this is checked into
     # subversion, we'll just use the SVN- form of the revision.
     MODIFIED=""
-    SVN_REV=`${GIT} log --pretty=full -1 | grep -F "git-svn-id:" | sed -e "s/.*\@\([^\s]*\)\s.*/\1/g"`
+    SVN_REV=`${GIT} log --pretty=full -1 | ${GREP} -F "git-svn-id:" | sed -e "s/.*\@\([^\s]*\)\s.*/\1/g"`
     if [ -z "$SVN_REV" ]; then
         VERSION=GIT-`${GIT} describe --long --always --tags --dirty=M 2> /dev/null`
         if [ $? -ne 0 ]; then
@@ -105,7 +109,7 @@ elif [ -d ${1}/.git ]; then
         fi
         echo ${VERSION}
     else
-        PARTS=`LANG=C ${GIT} log --pretty=full | grep -F "git-svn-id:" | head -1 | awk '{print $2;}' | sed -e s:^.*/svn/$2/:: | sed -e 's:/: :g' | sed -e 's/@.*$//g'`
+        PARTS=`LANG=C ${GIT} log --pretty=full | ${GREP} -F "git-svn-id:" | head -1 | ${AWK} '{print $2;}' | sed -e s:^.*/svn/$2/:: | sed -e 's:/: :g' | sed -e 's/@.*$//g'`
         BRANCH=0
         TEAM=0
         TAG=0

build_tools/mkpkgconfig

@@ -1,5 +1,6 @@
 #!/bin/sh
 PPATH="$1"
+GREP=${GREP:-grep}
 ## Make sure we were called from Makefile
 
 if [ "x$ASTERISKVERSIONNUM" = "x" ]; then